I have D2S bulbs...
The one thing that some Silverstar owners have had in the Focus is the wiring harness and/or housing melting. I'm not sure about the Contours, but as with anything that uses a higher wattage than originally specified, you do run the risk of that happening.
As for other stuff getting warm, I think that happens with a lot of Ford cars. Our Topazes and my Focus get warm around the climate control and radio areas when the headlights have been on for a bit.
